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I was at work today talking to a draughtsman when we had to measure a part so i went to my toolbox and got my vernier gauges out measured the part and told him it was 10.62mm . I was not prepared for the answer. :o He said that i could not measure that accurately using those verniers. :o I then...

I am starting building the wobbler EJS . On the drawings after some of the dimensions it says H7 i believe this to be a tolerance level my question is this is there a chart of these different tolerance's or a way of understanding them because it is a new thing to me. Any help would be great ...

I am not sure if this is the correct place to ask this question because it is not related to machining but knowing the extent of knowledge on this forum I thought you were the people to ask. I have to refill the oil in the transfer gear box on my four wheel drive car. I have been told it is to...

I have just received the Jan Ridders plans for his Flame eater . I had the plans originally but he has released some new modified plans recently with a graphite piston and internal valve. My question is this does any one know of a source for graphite here in the UK. I have never used it before...

Hi all i went to a local model show today at Normanby Hall near Scunthorpe and took a few pics and thought you might like a look. The hall also has a farming museum and when i went in i found this monster of a machine. Thanks for looking. Rob........

I have to put some O'Rings around a test tube on Stirling engine to seal it in the main cylinder do you think Nitrile O'Rings will stand the temperature if not what should I use . Thanks for looking. Rob......

According to my google page today is Richard Trevithick's 240th Birthday. I had never heard of him but having looked on Wikipedia it turns out this man had quit a lot to do with steam engine development well worth a read. http://en.wikipedia.org/wiki/Richard_Trevithick Rob.......

I could do with a bit of advice please . I needed to thread a part M4 so I turned the part down to 4mm put a slight leading edge on the end then using the die holder in my tail stock and turning the chuck by hand I tried cutting the thread. This is the results. As you may be able to see i don't...

One of my many hobbies is fishing I have been fishing for years now and about 18 months ago I started using a center pin reel instead of a fixed spool reel and I am hooked . I say once you have caught a good fish on a center pin you will never go back. Since then I have bought two more center...

Just seen this on YouTube I thought it was very good never seen one made of wood before. http://www.youtube.com/watch?v=ngb4SYR74m4 Rob.......

Hi all i have not been around for a while since my daughter was born in November and i certainly have had no workshop time :shrug:. But when i have had chance i have been doing a bit of research on milling machines i have nearly decided which one i want even though i don't have enough money...

My partner and i have just had our first child a lovely girl called Sophie . So i might not be in the workshop for a while but i think it is worth the sacrifice. ;D Rob.......

I have two internal O ring grooves to put in a cylinder. The cylinder is 16.5 mm ID and the o'rings to be fitted are 20 x 2 mm i am just wondering how you go about machining these grooves and what sort of tooling do i need. I have been giving this a bit of thought for a couple of days and have...

I have plans for a Stirling engine that i am having a go at making but the plans say for the displacer bearing use perlitic cast iron what is it and what are its properties ? , Why use it for a bearing ?. The displacer rod is steel. is it something to do with wear.? Can any body cast some light...

Went out today to buy a new phone for my house and came back with these. Also this. I have been sat at my lathe for a couple of hours this afternoon and used the compressor several times and i don't know how i have managed without them up to now. Before if i wanted to run one of my engines i...

Just seen this on eBay i thought it looked a handy little gadget does anybody use one or something similar. ? http://cgi.ebay.co.uk/Digital-Angle-Gauge-Set-job-angle-Milling-Machine-/230536821898?pt=LH_DefaultDomain_3&hash=item35ad10bc8a Rob......

I was driving through my local town today when i noticed a new shop front with a big sign on the roof (MACHINE MART) A big smile appeared on my face . My wife saw it at the same time as me and noticed the big grin on my face she let out a big sigh and said "OHH NO" ;D :big: So i turned around...

I am looking at buying a ball turning tool i have this Chester lathe with a 8mm quick change tool post. http://www.chesteruk.net/store/conquest_lathe.htm I have seen this one on eBay do you think it would do...

I am looking at having a go at a Stirling engine the plans i am looking at call for a test tube 15.6mm OD 54.5mm long. I realise that if i got a test tube 16mm OD a small change to the drawing would not be a problem but all the tubes i have seen on the Internet either have a rim around the neck...

I was not sure where to post this question so i put it here hope this is ok. I started reading a post about mini lathe mods at the weekend and as i had the same lathe but painted a different colour i thought i would read the rest of the post when i had more time but i cant seem to find it...